Wikipedia
Efeler
Efeler is a new intracity district and second level municipality in Aydın Province, Turkey. According to Law act no 6360, all Turkish provinces with a population more than 750000, were declared metropolitan municipality. The law also created new districts within the capital city which have second level municipalities in addition the metropolitan municipality. . Efeler is one of them.
Thus after 2014 the present Aydın central district was named Efeler and the name Aydın was reserved for the metropolitan municipality. (Efeler is the plural of the title Efe and it refers to the irregular soldiers who fought during the Turkish War of Independence)